Sulfuric acid, iron salt

SULFURIC ACID, IRON SALT (7720-78-7) Aqueous solution is strongly acidic. Reacts violently with strong bases. Incompatible with strong oxidizers. Aqueous solution is ineom-patible with sulfuric acid, caustics, alkylene oxides, ammonia, aliphatic amines, alka-nolamines, amides, epichlorohydrin, organic anhydrides, isocyanates, methyl isocyanoacetate, vinyl acetate. 

IRON (III) SULFATE IRON TERSULFATE SULFURIC ACID, IRON (3 ) SALT (3 2)... 

SULFURIC ACID, INDIUM SALT see ICJOOO SULFURIC ACID, IRON(2- ) SALT (1 1) see FBNIOO SULFURIC ACID, IRON (3 SALT (3 2) see FBAOOO SULFURIC ACID, LEAD(2+) SALT (1 1) see LDYOOO SULFURIC ACID, MAGNESIUM SALT (1 1), compounded with 2,2 -DITHIOBIS(PYRIDINE) 1,T-OXIDE see OIU850... 

Caswell No. 460 CCRIS 7331 ERA Pesticide Chemical Code 050502 Ferrous sulfate, heptahydrate Fesofbr Fesotyme Haemofort Iron protosulfate Iron sulfate heptahydrate lron(2- ) sulfate heptahydrate Iron(ll) sulfate heptahydrate Iron vitriol Ironate Irosul Melanterite mineral Presfersul Sal Martis Salt of steel Shoemaker s Black Siderotil mineral Sulfuric acid, iron(2+) salt (1 1), heptahydrate Szomolnikite mineral Tauriscite mineral. As a chemical intermediate, in electroplating, as a pesticide and medicinally as a hematinic. Registered by EPA as a herbicide (cancelled). Blue-green monoclinic crystals d n 1.897 loses H2O to form the tetrahydrate at 56.6", and the monohydrate at 65" soluble in H2O, insoluble in EtOH LDso (mus iv) n 65 mg/kg, (mus orl) = 1520 mg/kg. Generic Sigma-Aldrich Co. 

Synonyms Copperas Ferrosulfate Green vitriol Iron monosulfate Iron protosulfate Iron sulfate Iron (II) sulfate (1 1) Iron sulfate (ous) Iron vitriol Sal chalybis Sulfuric acid, iron (2+) salt (1 1)... 

Sulfuric acid, iron (3 ) salt (3 2). See Ferric sulfate... 

The first of these reactions takes place at temperatures of about 150°C, the second reaction proceeds at about 550—660°C. Typical furnaces used to carry out the reaction include cast-iron retorts the Mannheim mechanical furnace, which consists of an enclosed stationary circular muffle having a concave bottom pan and a domed cover and the Laury furnace, which employs a horizontal two-chambered rotating cylinder for the reaction vessel. The most recent design is the Cannon fluid-bed reactor in which the sulfuric acid vapor is injected with the combustion gases into a fluidized bed of salts. The Mannaheim furnace has also been used with potassium chloride as the feed. 

Plants can also be pests that need to be controlled, particulady noxious weeds infesting food crops. Prior to 1900, inorganic compounds such as sulfuric acid, copper nitrate, sodium nitrate, ammonium sulfate, and potassium salts were used to selectively control mustards and other broadleaved weeds in cereal grains. By the early 1900s, Kainite and calcium cyanamid were also used in monocotyledenous crops, as well as iron sulfate, copper sulfate, and sodium arsenate. Prom 1915 to 1925, acid arsenical sprays, carbon bisulfate, sodium chlorate, and others were introduced for weed control use. Total or nonselective herbicides kill all vegetation, whereas selective compounds control weeds without adversely affecting the growth of the crop (see Herbicides). 

In the direct precipitation process, the seeds of iron(III) oxide are added to an iron salt solution, most often iron(II) sulfate, which is subsequendy oxidized by air. The released sulfuric acid is removed by the addition of metallic iron with which it reacts to iron(II) sulfate. The overall reaction shows that ferrous sulfate is not consumed during the process. It only helps to oxidize metallic iron to ferric oxide ... 

Iron pentacarbonyl and l-methoxy-l,4-cyclohexadiene react as shown by Birch and oo-workera, but in dibutyl ether this solvent has been found superior. The tricarbonyl(methoxy-l,3-cyclohexadiene)iron isomers undergo hydride abstraction with triphenylmethyl tetrafluoro-borate to form the dienyl salt mixture of which the 1-methoxy isomer is hydrolyzed by water to the cyclohexadienone complex. The 2-methoxy isomer can be recovered by precipitation as the hexafluoro-phosphate salt. By this method the 3-methyl-substituted dienone complex has also been prepared from l-methoxy-3-methylbenzene. The use of the conjugated 1-methoxy-1,3-cyclohexadiene in Part B led to no increase in yield or rate and resulted chiefly in another product of higher molecular weight. An alternative procedure for the dienone is to react tricarbonyl(l,4-dimethoxycyclohexadiene)iron with sulfuric acid. ... 

Many people view the Skraup/Doebner-von Miller reaction as the worst witch s brew of all the heterocyclic syntheses. The reaction can be violently exothermic. A variety of oxidizing reagents and additives have been added in an effort to improve yields, including iron (III) and tin (IV) salts, nitrobenzenes, iodine and various acids such as boric and arsenic. Cohn s conditions for the Skraup reaction using an iron salt and boric acid in concentrated sulfuric acid are frequently employed. ... 

The use of steel spatulas should be avoided, as traces of iron salts cause the product to be of a reddish color. This can be removed either by a vacuum distillation, or by dissolving in concentrated sulfuric acid and reprecipitating by pouring the acid solution upon cracked ice. 

The mechanism of the reaction has not been elucidated. Presumably several reactions occur simultaneously. Thiocyanates react with iron(III) salts with the formation of red-colored complexes. In sulfuric acid medium nitrate or nitrite coddize diphenylamine to... 

Methyl methacrylate 4-Methylnitrobenzene 2- Methylpyridine Methylsodium Molybdenum trioxide Naphthalene 2-Naphthol Air, benzoyl peroxide Sulfuric acid, tetranitromethane Hydrogen peroxide, iron(II) sulfate, sulfuric acid 4-Chloronitrobenzene Chlorine trifluoride, interhalogens, metals Chromium trioxide, dinitrogen pentaoxide Antipyrine, camphor, phenol, iron(III) salts, menthol, oxidizing materials, permanganates, urethane... 

Mannheim (1) A process for making hydrochloric acid by roasting sulfuric acid and sodium chloride together in a closed cast iron furnace equipped with a plough. The byproduct sodium sulfate, known as salt cake, may be reciystallized after neutralization and filtration, and used as a detergent ingredient. A potassium variant is used in those locations where native potassium chloride can be found. 

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